The Young’s modulus of the concrete of the piles is 75.8 GPa and the concrete unit weight is 25 kN/m3. If the hammer strikes the pile at 3 m/s, and the pile cushion has the same cross-sectional area of the pile with a modulus of 2×105 kPa and a unit weight of 7 kN/m3, complete the wave equation analysis of the pile after one impact. Set the problem up in an Excel spreadsheet to carry the calculations until the movement of the pile stabilizes. Plot the displacement of the pile versus time. Note, when calculating the pile spring only, assume an element length of 4 m. This is still long but using the actual element length will make your constant too small, impacting the damping. Note that if using software elements would be less than 1 m.
The Young’s modulus of the concrete of the piles is 75.8 GPa and the concrete unit weight is 25 kN/m3. If the hammer strikes the pile at 3 m/s, and the pile cushion has the same cross-sectional area of the pile with a modulus of 2×105 kPa and a unit weight of 7 kN/m3, complete the wave equation analysis of the pile after one impact. Set the problem up in an Excel spreadsheet to carry the calculations until the movement of the pile stabilizes. Plot the displacement of the pile versus time. Note, when calculating the pile spring only, assume an element length of 4 m. This is still long but using the actual element length will make your constant too small, impacting the damping. Note that if using software elements would be less than 1 m.
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